EXHIBIT 31.4
CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER
I, Nora E. Brennan, certify that:
| 1. | I have reviewed this Annual Report on Form 10-K/A of Spectrum Pharmaceuticals, Inc.; |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; |
Date: May 1, 2023
| /s/ NORA E. BRENNAN |
| Nora E. Brennan |
| Executive Vice President and Chief Financial Officer |
| (Principal Financial Officer) |